.app {
    display: flex;
    flex-direction: column;
    background: url('@/assets/background.png');
    background-size: cover;
    height: 975px;
    .under {
        margin-top: 3px;
        display: flex;
        flex-direction: row;
        .menu {
            width: 240px;
            height: 900px;
        }
        .content {
            flex: 7;
        }
    }
}
.app-active {
    display: flex;
    flex-direction: column;
    background: url('@/assets/background.png');
    background-size: cover;
    background-repeat: no-repeat;
    height: auto;
    .under {
        margin-top: 3px;
        display: flex;
        flex-direction: row;
        .menu {
            width: 240px;
            height: 1700px;
        }
        .content {
            flex: 7;
        }
    }
}